SSL Zen – Free Let's Encrypt SSL Certificate & HTTPS/SSL Redirect WordPress Plugin <= 4.5.0 - Sensitive Information Exposure
Strategic Overview
- Status
- Patched in 4.6.0
- Affected Plugin
- SSL Zen — SSL Certificate Installer & HTTPS Redirects
- Affected Version
<= 4.5.0- CVSS
- 5.3Medium
- Weakness type
- CWE-287 · Improper Authentication
- CVE
CVE-2024-1076
At a glance
CVE-2024-1076 is a medium-severity Improper Authentication vulnerability in the SSL Zen WordPress plugin, affecting versions <= 4.5.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.6.0; sites on affected versions should update now. Disclosed April 2024, reported by Krzysztof Zając.
Vulnerability Overview
The SSL Zen – Free Let's Encrypt SSL Certificate & HTTPS/SSL Redirect WordPress Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.5.0 via the unsafe storage of keys. This makes it possible for unauthenticated attackers to extract sensitive data that includes private keys.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-287: Improper Authentication
Reaching this weakness in SSL Zen <= 4.5.0 takes a caller who can reach the endpoint. Improper authentication means the mechanism that proves who a caller is can be satisfied without the secret it was supposed to require.
An attacker authenticates as another user — administrators included — without ever knowing a password, so password policies and login rate limits never come into play. For SSL Zen the fix is 4.6.0: builds <= 4.5.0 are affected, anything from 4.6.0 onward is not.
Remediation
Update to version 4.6.0, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: SSL Zen 4.6.0 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in SSL Zen — SSL Certificate Installer & HTTPS Redirects
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